CVE-2024-50133 (GCVE-0-2024-50133)
Vulnerability from cvelistv5
Published
2024-11-05 17:10
Modified
2026-05-11 20:46
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Don't crash in stack_top() for tasks without vDSO Not all tasks have a vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL vdso pointer and crash. This can for example happen when using kunit: [<9000000000203874>] stack_top+0x58/0xa8 [<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220 [<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c [<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c [<90000000003c2704>] kunit_vm_mmap+0x88/0xc8 [<9000000000410b14>] usercopy_test_init+0xbc/0x25c [<90000000003c1db4>] kunit_try_run_case+0x5c/0x184 [<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48 [<900000000022e4bc>] kthread+0xc8/0xd4 [<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4
References
Impacted products
Vendor Product Version
Linux Linux Version: 803b0fc5c3f2baa6e54978cd576407896f789b08
Version: 803b0fc5c3f2baa6e54978cd576407896f789b08
Version: 803b0fc5c3f2baa6e54978cd576407896f789b08
Version: 803b0fc5c3f2baa6e54978cd576407896f789b08
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    "cveId": "CVE-2024-50133",
    "datePublished": "2024-11-05T17:10:58.264Z",
    "dateReserved": "2024-10-21T19:36:19.955Z",
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